Method and apparatus for detecting entrained gases in fluids

Details Method and apparatus for detecting entrained gases in fluids Method and apparatus for detecting entrained gases in fluids

1984-01-20

1986-01-21

Lacey, David L.

Measuring and testing

Gas analysis

Gas chromatography

175 40, 175 66, 436 30, G01N 2520

Patent

active

045650861

ABSTRACT:
Apparatus and method for detecting the level of gases entrained within a circulating drilling fluid used in subterranean well operations are disclosed. Detection of incipient gas kicks during drilling operations is accomplished by detecting the level of entrained gases. A gas-air sample is gathered at the surface of the well, and a gas-air sample having a constant relative humidity is delivered at a constant volumetric flow rate to gas sensors. Dilution air is automatically added to the sample when the gas concentration exceeds a known limit. Automatic periodic calibration of the sensors is provided. Stable signals from the gas sensor are obtained at two distinct flow rates.

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